Doppler Analysis and Modeling of V2V Channel at 6 GHz in Typical Urban Scenarios

This paper conducts a measurement campaign for the vehicle-to-vehicle (V2V) channel at 6 GHz in urban scenarios and analyzes its Doppler characteristics. Firstly, the distribution and variation of the Doppler shift of the multipath components are examined from the Doppler power spectrum (DPS). Secondly, the variation of the mean Doppler shift is described. The mean Doppler shift in the head-on driving scenario is found to have the greatest fluctuation, while the Doppler frequency shift in the overtaking is the most stable. Then, the Doppler spread (DOPS) is calculated and analyzed. The Doppler spread varies across different scenarios, and within the same environment, it also shows significant differences due to varying speeds. Finally, a normal distribution model for the Doppler spread is established. This work contributes to modeling the V2V channel in the urban environment.